I got into the habit of coating the hub, rear center of the rotor and front center of the rotor with anti-seize. It isn't perfect, but it has helped to lessen this happening.
https://www.amazon.com/Permatex-80078-Anti-Seize-Lubricant-Bottle/dp/B000FW7VGE/
You can go to any hardware store and pick up a 5$ tub of automotive grease. For basic grease, the brand really isn't important. Only use it for metal on metal connections, anything with rubber seals requires special lithium or silicone grease.
You'll be fine without greasing the bolts for a while though. Steel on steel connections tend to rust together which makes them more important to grease. But stainless/coated steel bolts plus aluminum parts are pretty dang corrosion resistant. You're only going to have a hard time taking the bolts out if you forget to grease the bolts for over a year and ride the hell out of the bike. It takes a while.
And even if you forget to grease it all together, you can usually get the bolts out without too much trouble.
Edit: If you're really worried just toss some anti-seize on those bolts https://www.amazon.com/Permatex-80078-Anti-Seize-Lubricant-Bottle/dp/B000FW7VGE/ref=sr_1_28?dchild=1&keywords=automotive+grease&qid=1610661292&sr=8-28
This is why anti-seize is so important.
When you do get it out, buy a can of <strong>anti-seize</strong> and use it on any fastener you might ever want to remove for any reason. Nuts, bolts, screws, etc. Worth every penny.
This is an issue on lots of cars. A thin layer of anti-seize where the wheel meets the hub (don’t get it on the lug bolts) makes a world of difference. You will be thanking yourself next time you need to remove the wheel!
Make it very thin. One bottle will last you a lifetime of cars.
I just replaced my stock hotend with a V6 clone. It works great (although the mount I have has no part cooling fan anymore). You can easily swap an entire heat break, block, and nozzle. You might need to use a 1.5mm wrench to adjust the ptfe tube and square nuts in order for you to have the same height offset if you're going with the old heatsink mount.
Do yourself a favor for future you. Buy some Anti Seize and get a little bit on the threads of the nozzle and heat break. (caution, this stuff is MESSY! you'll have silver stuff everywhere!)
https://www.amazon.com/Permatex-80078-Anti-Seize-Lubricant-Bottle/dp/B000FW7VGE
First thing I would do is make sure you are using proper grease, or even better, anti-seize compound on the threads of these pedals. Unscrew them, put some of this stuff on the threads, and then thread them on again.
Second thing is to use real wrenches to tighten the pedals, NOT the one-time-use wrench that comes with the bike. No need for a professional pedal wrench - just a couple of real wrenches to both tighten the pedal into the crank, and then tighten the nut on the inside of the crank. I was a professional bike mechanic in my youth, and just for fun, I tried installing the pedals with the "included" wrench, and I could NOT get them properly tight with it.
Still noisy? Well, if it were me, I'd remove the crank arm with a square taper crank removal tool, put some anti-seize on the spindle sides and the bolt threads, and then reinstall the bolt to a proper torque - about 50nm.
Still noisy, or don't want to pull the crank? Replace the pedals with something better. If you want to keep dual-use cleats and sneakers, I bought these and like them a lot. They're silent.
Started using this stuff when I was working on my car a lot, does a fantastic job on pedals as well:
https://www.amazon.com/Permatex-80078-Anti-Seize-Lubricant-Bottle/dp/B000FW7VGE
One day shipping for my area.... https://smile.amazon.com/dp/B000FW7VGE/ref=cm_sw_r_apan_glt_i_KX0G8VXKR48JTJ5CVCQG?_encoding=UTF8&psc=1
With a live skunk hidden underneath it, but first you have to coat it (the cone, not the skunk), with Anti Seize or Tanglefoot for that added 'Fuck You Asshole!' retaliation.
Deal link: Amazon
I looked it up and it seems that product is only in Canada, would this work? Permatex 80078 Anti-Seize Lubricant - 8 oz. Bottle https://www.amazon.com/dp/B000FW7VGE/ref=cm_sw_r_cp_api_glt_fabc_PGW9Y7WWXFP15YBT4QEJ
Bonus, find one you like and look for it on amazon (make measurements first to see how big you need). Usually a couple bucks cheaper and Prime shipping makes it doubly worth it. Take it to an exhaust shop if you don't have a welder. Shoulnd't take too long to install. O2 sensors can be a pain to remove if they've never been removed (rust). When installing the new one, put antiseize on the threads to make future removal easier.
and when you have it spaced proper...